How to Troubleshoot a Daytime Running Lights Problem Remove the cover from the fuse box located in the engine compartment. On the underside of the fuse box cover on Ford and Chevrolet vehicles there is a diagram depicting where each fuse is located within the fuse box. Locate the "DRL" or "Daytime Running Lamp" fuse. If you are unsure of the fuse location, consult your vehicle's owner's manual.